Plz help me with the questions after applying your skill.Question 1,2 and 3

Mathematics

2 answers:

Andrej [43]3 years ago

8 0

1.6
2.
3.1
sorry for not answering all lolz

anzhelika [568]3 years ago

3 0

Idk if this is lol I think
1.7 2,7,93

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What is the arithmetic sequence in this problem . help plz

adell [148]

Answer:

a(n)=80*(9/10)^(n-1)

Step-by-step explanation:

I think u r confused

this sequence is geometric not arithmetic

HOw we know that ??

when we get a common difference that must Be equal

d=72-80=-8 not equal to d=64.8-72=-7.2

So it is not arithmetic

but when we get the common ratio that also must be equal

r=72/80=9/10 equal to r=64.8/72=9/10

So it is geometric

By using this equation:

a(n)=a*r^(n-1)

and we have a=80 , r=9/10

Then a(n)=80*(9/10)^(n-1)

I really hope this helps <3

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3 years ago

Geometry help acute obtuse or right will give brainliest

ira [324]

If I'm reading this right, than all 9 angles are acute?

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3 years ago

Tan39= x/68 Plz help. Will give brainliet

lesya [120]

Answer:

$\huge\boxed{x \approx 55}$

Step-by-step explanation:

We need to note that this is an equation, in which we can solve for x.

$tan(39) = \frac{x}{68}$

We can use a calculator to find the tangent of 39 - we type 39 into the calculator then press the "TAN" button to find it's tangent. We find that to be around 0.81.

We now have the formula simplified down to $0.81 = \frac{x}{68}$ . To solve for x, we want to isolate it on one side, so we can multiply both sides by 68 to get rid of the fraction.